prompt

(noun): A reminder or cue.
(noun): A time limit given for payment of an account for produce purchased, this limit varying with different goods.
(noun): A sequence of characters that appears on a monitor to indicate that the computer is ready to receive input.
(noun): (writing) A suggestion for inspiration given to an author.
(verb): To lead (someone) toward what they should say or do.
(verb): To show or tell an actor/person the words they should be saying, or actions they should be doing.
(verb): To initiate; to cause or lead to.
(adjective): Quick; acting without delay.
(adjective): On time; punctual.
(adjective): Ready; willing to act.

I filled in my name where the prompt appeared on the computer screen but my account wasn't recognized.
I prompted him to get a new job.
If he forgets his words I will prompt him.
He was very prompt at getting a new job.
Be prompt for your appointment.